PEX Series Fine Jaw Crusher | Secondary Rock & Ore Sizing Equipment
The PEX Series Fine Jaw Crusher is a high-performance type of secondary and tertiary stone crushing equipment. It is designed specifically for demanding mid-to-fine size reduction applications inside metal mining sectors, quarry operations, and concrete aggregate production lines.
The PEX series strictly belongs to the specialized fine jaw crusher category, distinguished cleanly from standard PE series coarse jaw crushers. It is universally applied across multiple global industries including mining, metallurgy, building infrastructure, highway/railway construction, water conservancy projects, and chemical processing facilities.
Perfect Applied Materials
This structural crushing plant is exceptionally suitable for processing materials with extreme compressive strength up to 320 MPa. It flawlessly handles high-hardness materials such as:
- Granite & Basalt
- River Stone (Pebble)
- Limestone & Quartzite
- Dense Abrasive Ores
Product Showcase
Real PEX secondary fine jaw mill manufacturing details inside our heavy industrial facility.
Operation Demonstration
Watch the strict factory running test and inspection process of Hengtai high efficiency jaw crusher.
Advanced Compression Working Principle
Unlocking superior aggregate yield through unique swing extrusion and motion characteristics.
Power Distribution & Motion: The electric motor transmits high torque through heavy V-belts and pulley frameworks into the heat-treated eccentric shaft, causing the movable jaw plate to perform reciprocating cycles toward the fixed jaw plate.
Dual Motion Dynamics: The upper jaw performs an intentional circular motion to violently fracture massive stones, while the lower section utilizes an elliptical motion path to speed discharge velocity and improve material shape uniformity.
Mechanical Overload Safeguard: If uncrushable materials (like tramp iron pieces) unexpectedly slide into the deep cavity, the heavy toggle plate acts as a sacrificial protector component, breaking first to shield the expensive eccentric shaft.
Key Features & Global Technical Advantages
Engineered with precision components to minimize routine quarrying overheads.
- Simple & Reliable Structure: Compact layout architecture ensuring steady, continuous mechanical running routines at exceptionally low maintenance costs.
- Deep Crushing Cavity: Fully optimized chamber geometry with zero dead zones, significantly elevating raw material draw capacity and hour-to-hour output efficiency.
- Adjustable Discharge Sizing: Seamlessly regulated via integrated shim or wedge system blocks to perfectly match diverse fine product sizing specifications.
- Forged Heavy Duty Eccentric Shaft: Precision forged and treated recipes guarantee premium fatigue endurance and long service cycles.
- Balanced Flywheel Framework: Substantially reduces erratic mechanical vibration harmonics, stabilizing whole plant performance.
- Safe & Sealed Lubrication System: Highly reliable continuous internal lubrication design, slashing field-servicing workloads.
Industrial Crushing Plant Line Integration
How Hengtai orchestrates PEX machinery to deliver premium hard-rock sizing lines.
The PEX Fine Jaw Crusher is a stellar cornerstone unit within standard global aggregate sizing configurations. It acts smoothly right after primary jaw reduction stages:
Hengtai provides full engineering EPC integration, flawlessly matching our specialized industrial Feeders, secondary PEX units, auxiliary Cone Crushers, and continuous high-vibration Sorting Screens via integrated belt conveyors to establish an automated, dust-controlled hard rock processing plant.
Technical Specifications & Parameters
Standard specifications for PEX Series High-Efficiency Fine Jaw Crusher models.
| Model | Max Feed Size (mm) | Discharge Range (mm) | Capacity (m³/h) | Motor Power (kW) | Weight (t) |
|---|---|---|---|---|---|
| PEX-100×600 | 80 | 7–21 | 2–8 | 7.5 | 0.9 |
| PEX-150×750 | 120 | 18–48 | 5–16 | 15 | 3.5 |
| PEX-200×1000 | 160 | 20–55 | 6.9–23.8 | 22 | 6.5 |
| PEX-250×750 | 210 | 25–60 | 8–22 | 22 | 4.9 |
| PEX-250×1000 | 210 | 25–60 | 10–32 | 30–37 | 6.5 |
| PEX-250×1200 | 210 | 25–60 | 13–38 | 37 | 7.7 |
| PEX-300×1300 | 250 | 20–90 | 10–65 | 75 | 11.0 |
Maintenance & Troubleshooting (FAQ)
Expert field solutions to maximize your fine jaw crusher operational lifespan.
Q1: Why does the crusher bearing temperature become too high?
A: This is usually caused by insufficient internal lubrication, contaminated grease or dust entries, or normal wear of the bearing sleeve. We suggest establishing strict daily grease checking routines and executing comprehensive bearing cavity flushes during wear parts replacement intervals.
Q2: What causes discharge clogging or the output particle size to get larger?
A: Clogging is frequently a result of overfeeding materials beyond technical parameters or feeding high-moisture clays. An enlarged final aggregate size stems directly from normal long-term jaw plate corrugation wear. Simply adjust the internal wedge or shim system to tighten the discharge slot gap.
Q3: Why do jaw plates loosen up or completely fall off during operation?
A: Severe pounding impact from hard granites can loosen structural anchoring wedge blocks or spring tension bolts over time. Ensure your field maintenance team inspects and tightens all major frame bolts every week before initiating raw quarry feeding shifts.
Q4: Why does the toggle plate break frequently, and how do we prevent it?
A: Sacrificial toggle plate fatigue happens when tramp metals or massive uncrushable boulders over-pressurize the deep chamber. We strongly recommend installing a magnetic metal separator upstream over the belt feeding system to guarantee safe continuous compression.
Q5: What should we check if the belt slips or the heavy flywheel stops rotating?
A: First, check for an instant raw material overload choking the deep cavity or loose V-belts requiring tension adjustments. Additionally, verify your local plant motor electrical phase connection parameters to prevent motor reverse rotation under continuous production strain.
COMPLETE PLANT SOLUTIONS
Configure your production line with Hengtai premium auxiliary machinery to maximize output efficiency and achieve superior particle shapes.
PE Series Jaw Crusher
Engineered as the primary crushing stage to reduce giant blasted boulders down to a manageable transfer size.
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PY Series Cone Crusher
Ideal reduction companion for high-hardness materials like granite and basalt, producing excellent cubical aggregates.
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YK Vibrating Screen
Utilizes advanced circular motion patterns to separate and grade crushed stones into multiple precise commercial sizes.
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LF Horizontal Screen
Features a low-profile linear deck design, optimized for high-accuracy sorting and mobile crushing plant installations.
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